All Discussions Tagged 'Lagrange' - Theosophy.Net2024-03-29T09:31:24Zhttps://theosophy.net/group/science/forum/topic/listForTag?tag=Lagrange&feed=yes&xn_auth=noLisa Pathfinder Gravity Probe - Stunning Successtag:theosophy.net,2016-06-07:3055387:Topic:1496162016-06-07T22:05:48.345ZJohnhttps://theosophy.net/profile/JohnEMead
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<p>Excerpt from BBC article:</p>
<p>"The mission to demonstrate technologies needed to detect gravitational waves in space has been a stunning success.</p>
<p>The <a href="http://sci.esa.int/lisa-pathfinder/" target="_blank">Lisa Pathfinder satellite</a> was sent into orbit to test elements of the laser measurement system that would be used on a future observatory.</p>
<p>Performance objectives were exceeded on the very first day the equipment was switched on."…</p>
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<p>Excerpt from BBC article:</p>
<p>"The mission to demonstrate technologies needed to detect gravitational waves in space has been a stunning success.</p>
<p>The <a href="http://sci.esa.int/lisa-pathfinder/" target="_blank">Lisa Pathfinder satellite</a> was sent into orbit to test elements of the laser measurement system that would be used on a future observatory.</p>
<p>Performance objectives were exceeded on the very first day the equipment was switched on."</p>
<p><a href="http://www.bbc.com/news/science-environment-36472434" target="_blank">BBC Article</a></p>
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<p>The European Space Agency (ESA) has a brief article on the science challenges and new technologies. see:</p>
<p><a href="http://sci.esa.int/lisa-pathfinder/57559-a-perfectly-still-laboratory-in-space/" target="_blank">A perfectly still laboratory in space</a></p>
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<p>As an aside, the orbits of the three satellites (two yet to be launched) will be at various Lagrange Points (L1, L2, L3, ... ) which are known to be flat space-time points. This makes the going easier, since tidal forces are minimized as well as minimizing any micro-gravity.</p>
<p>An explanation of the Lagrange Points, where these spacecraft will be sitting "on" in space-time, is given on the ESA site link:</p>
<p><a href="http://www.esa.int/Our_Activities/Operations/What_are_Lagrange_points" target="_blank">What are Lagrange Points?</a></p>
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<p>A diagram of several of these point is below. Notice that two bodies have 5 Lagrange Points. Below you can see the earth-Moon L1, L2, ..., L5 and also the Sun-Earth SEL1 and SEL2. The SEL3,...SEL5 are not shown.</p>
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<p><a target="_self" href="http://storage.ning.com/topology/rest/1.0/file/get/2867572846?profile=original"><img width="750" class="align-left" src="http://storage.ning.com/topology/rest/1.0/file/get/2867572846?profile=RESIZE_1024x1024" width="750"/></a></p>
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<p> also, here is a photo showing the saddles, peaks and troughs with a fictional representation of space-time that is dramatically enlarged. The system shown below is the Lagrange Points for the Earth-Moon System.</p>
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<p><a target="_self" href="http://storage.ning.com/topology/rest/1.0/file/get/2867573213?profile=original"><img width="750" class="align-left" src="http://storage.ning.com/topology/rest/1.0/file/get/2867573213?profile=RESIZE_1024x1024" height="502" width="750"/></a></p>
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